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Cheap flights from Seattle to Ireland from €177

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Ireland departing on 27/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from Seattle to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
07:00 - 07:30
SEA
-
SNN
16h 30m
1 stop
United Airlines Logo
09:30 - 16:07
SNN
-
SEA
14h 37m
1 stop
€652United Airlines
Sun, 6 Sep - Thu, 10 Sep
United Airlines Logo
07:00 - 07:30
SEA
-
SNN
16h 30m
1 stop
United Airlines Logo
12:30 - 23:04
SNN
-
SEA
18h 34m
2 stops
€656United Airlines
Sun, 6 Sep - Thu, 10 Sep
United Airlines Logo
07:30 - 10:15
SEA
-
SNN
18h 45m
1 stop
United Airlines Logo
12:30 - 21:55
SNN
-
SEA
17h 25m
1 stop
€667United Airlines
Wed, 23 Sep - Thu, 1 Oct
Delta Logo
06:05 - 11:10
SEA
-
SNN
21h 05m
2 stops
Delta Logo
13:05 - 22:05
SNN
-
SEA
17h 00m
2 stops
€697Delta
Mon, 3 Aug - Wed, 19 Aug
Delta Logo
11:30 - 11:10
SEA
-
SNN
15h 40m
1 stop
Delta Logo
13:05 - 20:20
SNN
-
SEA
15h 15m
1 stop
€704Delta
Tue, 4 Aug - Tue, 25 Aug
Icelandair Logo
14:35 - 10:15
SEA
-
DUB
11h 40m
1 stop
Icelandair Logo
11:30 - 20:40
DUB
-
SEA
17h 10m
2 stops
€826Icelandair
Fri, 20 Nov - Fri, 27 Nov
Lufthansa Logo
18:50 - 16:55
SEA
-
DUB
14h 05m
1 stop
Lufthansa Logo
09:50 - 18:32
DUB
-
SEA
16h 42m
1 stop
€827Lufthansa
Wed, 5 Aug - Fri, 14 Aug
Air Canada Logo
10:30 - 07:45
SEA
-
DUB
13h 15m
1 stop
Air Canada Logo
09:50 - 22:42
DUB
-
SEA
20h 52m
2 stops
€828Air Canada
Tue, 13 Oct - Tue, 20 Oct
Icelandair Logo
15:40 - 11:05
SEA
-
DUB
11h 25m
1 stop
Icelandair Logo
14:15 - 20:40
DUB
-
SEA
14h 25m
1 stop
€830Icelandair
Thu, 23 Jul - Tue, 28 Jul
Air Canada Logo
05:45 - 07:45
SEA
-
DUB
18h 00m
2 stops
Air Canada Logo
09:20 - 10:07
DUB
-
SEA
32h 47m
2 stops
€831Air Canada
Wed, 29 Jul - Wed, 5 Aug

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Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets
Icelandair
20 Nov
SEA14:35Seattle/Tacoma Intl
11h 40m
1 stop
DUB10:15Dublin
25 Nov
DUB11:30Dublin
17h 10m
2 stops
SEA20:40Seattle/Tacoma Intl
€826
Icelandair
23 Jul
SEA15:40Seattle/Tacoma Intl
11h 25m
1 stop
DUB11:05Dublin
27 Jul
DUB14:15Dublin
14h 25m
1 stop
SEA20:40Seattle/Tacoma Intl
€830
Icelandair
13 Jul
SEA15:40Seattle/Tacoma Intl
13h 35m
1 stop
DUB13:15Dublin
26 Jul
DUB12:15Dublin
31h 30m
1 stop
SEA11:45Seattle/Tacoma Intl
€833

Air Canada flights from Seattle to Ireland

Our best Air Canada deals on Seattle to Ireland flight tickets
Air Canada
13 Oct
SEA10:30Seattle/Tacoma Intl
13h 15m
1 stop
DUB07:45Dublin
20 Oct
DUB09:50Dublin
20h 52m
2 stops
SEA22:42Seattle/Tacoma Intl
€828
Air Canada
14 Oct
SEA08:00Seattle/Tacoma Intl
16h 15m
1 stop
DUB08:15Dublin
22 Oct
DUB09:50Dublin
16h 42m
2 stops
SEA18:32Seattle/Tacoma Intl
€835

momondo Fare Finder

 
Customise your flight search to find flights from Seattle to Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 11 June 2026.
Use the filters below to find and compare flights from Seattle to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 6/9

07:00-07:30

1 stop16h 30m

Shannon

Thu 10/9

09:30-16:07

1 stop14h 37m

€652

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 6/9

07:00-07:30

1 stop16h 30m

Shannon

Thu 10/9

12:30-23:04

2 stops18h 34m

€656

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 23/9

07:30-10:15

1 stop18h 45m

Shannon

Thu 1/10

12:30-21:55

1 stop17h 25m

€667

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 3/8

06:05-11:10

2 stops21h 05m

Shannon

Wed 19/8

13:05-22:05

2 stops17h 00m

€697

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/8

11:30-11:10

1 stop15h 40m

Shannon

Tue 25/8

13:05-20:20

1 stop15h 15m

€704

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 20/11

14:35-10:15

1 stop11h 40m

Dublin

Fri 27/11

11:30-20:40

2 stops17h 10m

€826

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 5/8

18:50-16:55

1 stop14h 05m

Dublin

Fri 14/8

09:50-18:32

1 stop16h 42m

€827

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 13/10

10:30-07:45

1 stop13h 15m

Dublin

Tue 20/10

09:50-22:42

2 stops20h 52m

€828
Fastest return journey

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 23/7

15:40-11:05

1 stop11h 25m

Dublin

Tue 28/7

14:15-20:40

1 stop14h 25m

€830

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 29/7

05:45-07:45

2 stops18h 00m

Dublin

Wed 5/8

09:20-10:07

2 stops32h 47m

€831

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Ireland from

How to get the cheapest flight ticket from Seattle to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ireland?

The month of November is another great option to travel to Ireland, with average flight prices from Seattle averaging around €260.

What is the cheapest Seattle/Tacoma Intl to Ireland flight route?

Fly from Seattle/Tacoma Intl to Dublin for the best Seattle/Tacoma Intl - Ireland flight prices

How far in advance should I book a flight from Seattle to Ireland?

You are more likely to see cheaper flights to Ireland from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €543 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Seattle for as low as €428 on momondo.

What cabin class options are available on Seattle to Ireland flights?

There is only 1 cabin class available to choose from on Seattle to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Ireland flights?

No. A direct flight is the cheapest option for a flight between Seattle to Ireland.

Cheap Seattle to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Ireland

Best price found

€1,009

Fastest flight time

9h 05m

Direct flights

Every day

Airports in Ireland

77 airports
The best flight deal from Seattle to Ireland found on momondo in the last 72 hours is €1,009
The fastest flight from Seattle to Ireland takes 9h 05m
Direct flights go from Seattle to Ireland every day.
There are 77 airports in Ireland. From Seattle there are direct flights to Dublin (DUB).
Search flight deals

Frequently asked questions about flying from Seattle to Ireland

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Ireland?

    Prices for flights from Seattle/Tacoma Intl Airport to Ireland are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Ireland?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Ireland?

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Ireland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Ireland for you.

Can I find flights from Seattle to Ireland with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ireland from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Ireland?

momondo helps you find the best flight between Seattle and Ireland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Ireland right now. Can momondo alert me if prices change?

Price alerts on flights to Ireland from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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Find better results for your trip to Ireland

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Popular flights according to clicks in the last 7 days on momondo
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